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Planning nonlinear access paths for temporal bone surgery.

Johannes Fauser1, Georgios Sakas2, Anirban Mukhopadhyay2

  • 1Department of Computer Science, Technische Universität Darmstadt, Darmstadt, Germany. johannes.fauser@gris.tu-darmstadt.de.

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|March 5, 2018
PubMed
Summary
This summary is machine-generated.

This study introduces fast and accurate nonlinear path planning for minimally invasive otobasis surgery. These methods enhance surgical safety and outcomes by navigating complex temporal bone anatomy.

Keywords:
Curvature constraintMinimally invasiveNonholonomic motion planningRRTStatistical shape modelsTemporal bone surgery

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Area of Science:

  • Robotics
  • Medical Robotics
  • Surgical Planning

Background:

  • Minimally invasive surgery in the otobasis is challenging due to narrow anatomical constraints.
  • Existing linear surgical paths offer limited clearance to sensitive structures.
  • Nonlinear trajectories can improve instrument orientation and safety margins.

Purpose of the Study:

  • To develop fast and accurate planning methods for nonlinear access paths in otobasis surgery.
  • To address the computational time and goal pose constraints specific to temporal bone surgery.
  • To enable improved clinical outcomes through enhanced surgical navigation.

Main Methods:

  • Defined a motion planning problem in 3D space with specific surgical constraints.
  • Presented [Formula: see text]-RRT-Connect, a bidirectional Rapidly-exploring Random Tree (RRT) based motion planner.
  • Utilized two RRT variants for efficient and accurate path planning.

Main Results:

  • Demonstrated the efficacy of [Formula: see text]-RRT-Connect on patient CT data and synthetic anatomies.
  • Showcased superior performance compared to state-of-the-art methods using circular arcs or Bézier-Splines.
  • Validated the feasibility of planning nonlinear paths for otobasis interventions.

Conclusions:

  • Preoperative and intra-operative planning of nonlinear access paths is feasible for minimally invasive otobasis surgery.
  • The proposed methods offer a significant advancement for surgical navigation in complex anatomical regions.
  • This work paves the way for safer and more effective otobasis interventions.